StatTutor Lesson - Population versus sample

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      Question 1

      57

      Question 1.

      When should a sample be taken instead of a census?

      		A.
      		B.
      		C.
      		D.
      Incorrect. We take a sample whenever we cannot do a census.
      Correct. We take a sample whenever we cannot do a census.
      Incorrect. Try again.
      2

      Questions 2-5

      159

      Question 2.

      Officials of a major university want to know what percent of their students recycle paper. They randomly sample 200 students to find out. What is the population of interest?

      		A.
      		B.
      		C.
      		D.
      		E.
      Incorrect. The population of interest is the entire group of individuals about which the researcher wants information. In this case, the officials want information about all of their students. A researcher specifies the population before collecting information with a sample. So, the population cannot be "all students who recycle paper."
      Correct. The population of interest is the entire group of individuals about which the researcher wants information. In this case, the officials want information about all of their students. A researcher specifies the population before collecting information with a sample. So, the population cannot be "all students who recycle paper."
      Incorrect. Try again.
      2

      Questions 6-7

      234

      Question 6.

      Officials of a major university want to know what percent of their students recycle paper. They randomly sample 200 students to find out. Which of the following is an important question that should be asked?

      		A.
      		B.
      		C.
      		D.
      Incorrect. Since the officials want to know what percent of their students recycle paper. These officials need to clearly define what is meant by a student at their university.
      Correct. Since the officials want to know what percent of their students recycle paper. These officials need to clearly define what is meant by a student at their university.
      Incorrect. Try again.
      2